8
•
Radiation sensor:
The
parallel
collector orientation is important in order to obtain a mea
-
surement that corresponds to the collector position. Consequently it should be secured
to the sheet steel covering or adjacent to the collector on an extension of the mounting
rail. To this end, the sensor casing has a blind hole that can be opened at any time. The
sensor is also available as a wireless version.
•
Room sensor:
This sensor is intended for installation in the living space (reference
room). Do not install the room sensor near a heat source or window. By simply replug
-
ging a jumper inside the sensor, each room sensor can also be used exclusively as a
remote adjuster
(no room temperature influence). It is only suitable for operation in dry
rooms. The sensor is also available as a wireless version.
•
Outside temperature sensor:
This sensor is installed on the coldest wall (usually facing
north) some two meters above the ground. Avoid temperature influences from nearby air
shafts, open windows, cable ways, etc. It must not be subjected to direct insolation.
Electrical connection
This must only be carried out by a qualified electrician in accordance with the relevant local
regulations.
Note:
In line with regulations, the system must be equipped with protection against lightning
(surge arrester). Sensor failures due to thunderstorms and static electricity are usually the
result of missing or incorrect earthing or missing surge protection.
Caution:
Only work inside the module when the power supply is at zero volt. Assembling the
device with the power connected may result in damage.
Connect all sensors and pumps/valves as they are numbered in the respective program.
In the mains voltage range, fine wire cross-sections of 0.75 - 1.5 mm² are recommended, ex
-
cept for the supply cable.
A terminal strip is provided in the 230 V terminal box for connection of the earth conductor
(PE). All cables can be fixed with a locking clamp (= strain relief) immediately after termina
-
tion. Subsequently, side cutters are required to remove the locking clamps; therefore, more
clamps than necessary are provided.
